get_ancestors()

get_ancestors() — Gets an array of ancestor IDs for a given object.

Inputs: $object_id (int): Optional. The ID of the object. Default 0. $object_type (string): Optional. The type of object for which we’ll be retrieving ancestors. Accepts a post type or a taxonomy name. Default empty. $resource_type (string): Optional. Type of resource $object_type is. Accepts ‘post_type’ or ‘taxonomy’. Default empty.

Returns int[]: An array of IDs of ancestors from lowest to highest in the hierarchy.